The NE46134 / 2SC3357 is an excellent RF-Transistor. These meanwhile obsolete transistors are widely used in the RF Stages of Elecraft radios, as for example in the K3. A very similar but newer transistor which is cheap and still in active production is the BFU590Q (SOT89) oder BFU590G (SOT223). Give'm a tray.
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One of the reasons, why the 2SC5551AF besides of its superb noise figure became a legend, is its robust silicon structure. Its maximum ratings (40 V Ucbo, 30 V Uceo) is closer to a 2222A than to other newer RF-transistors and makes them very reliable in active antenna applications. The junctions of a bipolar transistor behave like a Zener-Diode, exceeding the max. rated Voltages damages the device.
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regards
Fred
